Description
Guide your otter along the river, all the way to the sea. Answer quizzes to test your knowledge, or simply scroll through kanji with their meanings and readings for each JLPT level (N5 to N1).
Progress naturally with different exercises and by following the River Challenges, which guide you step by step in your Japanese learning. Each completed challenge unlocks exclusive cosmetics (wallpapers, crowns, animations) to personalize your experience. Discover the story with every boss fight.
You can also track your performance in a global leaderboard and compare your progress with learners from around the world… or even with your friends!
The N5 level is completely free, so you can start right away.
Perfect for beginners as well as intermediate learners preparing for the JLPT or looking to build a solid foundation in kanji.